Oliver Lehmann writes:

Trying the same with pop3d(-ssl) or imapd(-ssl) supplied with
courier-imap results in the following error:

[EMAIL PROTECTED] olivleh1> telnet 0 110
Trying 0.0.0.0...
Connected to 0.
Escape character is '^]'.
+OK Hello there.
user [EMAIL PROTECTED]
+OK Password required.
pass test
-ERR Temporary problem, please try again later
Connection closed by foreign host.
Exit 1
[EMAIL PROTECTED] olivleh1>
maillog shows:
Nov 19 13:07:20 kartoffel pop3d: LOGIN FAILED, [EMAIL PROTECTED], 
ip=[::ffff:127.0.0.1]
Nov 19 13:07:20 kartoffel authdaemond: stopping authdaemond children
Nov 19 13:07:20 kartoffel pop3d: authentication error: Input/output error
Nov 19 13:07:20 kartoffel authdaemond: restarting authdaemond children

This suggests a bug in the vpopmail library causing a segfault and a crash, at which point the parent authdaemond process restarts all the child processes.

debug.log shows:
Nov 19 13:07:20 kartoffel authdaemond: received auth request, service=pop3, 
authtype=login
Nov 19 13:07:20 kartoffel authdaemond: authvchkpw: trying this module

Right.


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